dw2lam/openlauncher ? reverse-engineered prompt

Build me an Android car launcher for aftermarket head units that feels clean, polished, and customizable, like it actually belongs in the dash instead of looking like a phone app. It should work well with little or no internet, since most head units are offline most of the time. I want a home screen with a drag and drop widget grid where I can move and resize panels, plus a sidebar for favorite apps that can sit on the left, right, or bottom.

Include useful car widgets like music controls with album art, radio display and controls, GPS speed, altitude, trip meter with elapsed time and a 0 to 100 timer, compass, weather that hides itself when offline, and system vitals like CPU, memory, and temperature. Add a full app library that can surface hidden system apps, strong day and night theme options, deep appearance settings, and a simple first run setup that explains permissions before asking for them. Make sure it scales nicely across different head unit screen sizes and feels stable. If you need details, check current Android launcher docs online.